The invention provides a rotary tool-equipped tool rest which not only can prevent the axes of the rotary tool and the axes of the tool combined axle from deviating, but also having the advantages of being hard to have failures, easy for maintenance and low production cost as the rigidity of the front-back direction of the turret is high so that a processing with high precision can be implemented, and the mechanism which is used for buckling a phase determining pin arranged inside the turret with the non-swiveling housing is simple. The movable member (27) is made to move forwardly when the turret (1) is clamped with respect to the non- swiveling housing (2) after swiveling and indexing; and then, the phase determining pin (8) arranged in the turret (1) is made to project and engaged withthe non-swiveling housing (2) . Further, a coupling mechanism is clamped the turret (1) with respect to the non-swiveling housing (2) taking a three-piece coupling mechanism consisting of a first coupling member (26), a second coupling member (28) and a third coupling member (29).